I Thought You Said This Would Work - Ann Garvin
Samantha Holton and Holly Dunfee have two things in common. It's not Samantha's unwavering confidence conflict avoidance will lead to a happy life, nor is it Holly's take-no-prisoners attitude or blistering sense of humor. Nope, the only things they have in common are that they despise each other and they love their best friend of twenty-five years, Katie Martin, their shared roommate in college.